A vehicle-mounted double-layer stretcher device

Abstract

The utility model discloses a vehicle-mounted double-layer stretcher bed device belongs to vehicle-mounted medical security equipment technical field, including from below to above including base and the compartment of being located above base in proper order, the compartment is arranged with inclined section, telescopic section, lower stretcher support and upper stretcher support from below to above in proper order in, one end of inclined section is connected with base through hydraulic telescopic cylinder, and inclined section, telescopic section and lower stretcher support are connected through guide rail sliding block mechanism and form horizontal telescopic structure, and four corners of base are equipped with lifting device, and upper stretcher support passes through lifting device and elevates, and lower stretcher support and upper stretcher support all are equipped with the self -locking device for fixing stretcher body, the utility model discloses through hydraulic telescopic cylinder and lifting device can effectively adapt high chassis shelter car, improve the transfer efficiency, and improve the rescue efficiency through double-layer stretcher bed structure and seat structure simultaneously.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle-mounted medical support equipment, and in particular relates to a vehicle-mounted double-layer stretcher bed device. Background Technology

[0002] Currently, with increasingly tense international situations and frequent international wars, rapid and effective treatment of the wounded is crucial for improving troop combat effectiveness and morale in modern warfare. Therefore, various countries have successively developed different medical transfer devices to achieve rapid response and transfer the wounded from the battlefield to safe areas for treatment. Among these, vehicle-mounted stretcher beds, with their advantages of efficient rescue and transfer of the wounded, improving battlefield casualty survival rates and treatment efficiency, are increasingly favored by the armed forces of various countries.

[0003] Currently, the vehicle-mounted stretcher bed devices in use are mainly divided into low-chassis lifting stretcher vehicles and low-chassis double-layer stretcher beds. The chassis height is 1 meter. The transport vehicle has a relatively low chassis and can only be used in a single environment. It cannot meet the requirements of modern battlefields, such as strong off-road capability and complex terrain.

[0004] Chinese Patent CN221578505U discloses a vehicle-mounted recumbent patient loading and unloading device. The device includes a base frame, intermediate components, a slide rail assembly, an upper connector, a tilting assist mechanism, a telescopic assist mechanism, and a stretcher. The base frame supports the device; the tilting assist mechanism assists in lifting the stretcher during patient loading and lowers its height by causing the end of the stretcher furthest from the vehicle compartment to swing downwards; the telescopic assist mechanism assists in pushing and pulling the stretcher during patient loading and unloading. This solution improves vehicle chassis height while addressing the difficulty of loading and unloading patients caused by excessively high chassis in field medical emergency transport vehicles.

[0005] However, this plan still has some shortcomings. It only has a single-layer stretcher, which can only hold one wounded person at a time, and its carrying capacity is limited.

[0006] Existing double-layer stretcher beds can accommodate wounded individuals on both the upper and lower levels. The upper level uses a parallel four-bar linkage to tilt and push the stretcher out, while the lower level uses roller guide rails to push it out horizontally. However, during operation, operators are required to transport the wounded into the vehicle, resulting in a low level of automation, high workload for operators, and the potential safety hazard of falls.

[0007] To address the problems mentioned above and compensate for the shortcomings of currently published products, the inventors provide a vehicle-mounted stretcher bed device adapted to a high chassis. The vehicle chassis is 1.4 meters high, and the vehicle-mounted stretcher bed is located above the chassis and has a double-layer stretcher bed structure, which can simultaneously accommodate two lying or three sitting wounded patients. The device utilizes hydraulic push rods to control the tilting and horizontal extension / retraction of the stretcher bed, and a motor to control the upward movement of the stretcher bed, enabling rapid transfer of wounded patients. It features high work efficiency and ease of use. The device employs hydraulic and motor drives, and a slider guide mechanism allows the upper and lower stretcher supports to tilt and extend out of the vehicle cabin, facilitating the placement of wounded patients and significantly reducing the workload of operators. Utility Model Content

[0008] The purpose of this utility model is to provide a vehicle-mounted double-layer stretcher bed device, located on a 1.4-meter vehicle chassis. It uses hydraulic push rods to control the tilting and horizontal extension of the stretcher bed, and uses a motor to control the upward movement of the stretcher bed, so as to quickly transfer the wounded and improve work efficiency. At the same time, the vehicle-mounted stretcher bed has a double-layer stretcher bed structure, which can simultaneously accommodate two lying wounded or three sitting wounded.

[0009] The objective of this utility model is achieved through the following technical solution: A vehicle-mounted double-layer stretcher bed device includes, from bottom to top, a base and a carriage located above the base. The carriage is arranged from bottom to top as follows: an inclined section, a telescopic section, a lower stretcher support, and an upper stretcher support. The base is located on the vehicle chassis. One end of the inclined section is connected to the base via a hydraulic telescopic cylinder, and the other end of the inclined section is connected to the base via a rotating joint; The inclined section, telescopic section and lower stretcher support are connected by a guide rail slider mechanism to form a horizontal telescopic structure; The upper stretcher support and the lower stretcher support are detachably connected. The base is equipped with lifting devices at the four corners, and the upper stretcher support is raised and lowered by the lifting devices. Both the lower and upper stretcher supports are equipped with self-locking devices for securing the stretcher body.

[0010] Furthermore, the base includes a base support and a shock-absorbing block located below the base support. The hydraulic telescopic cylinder is located at one end of the base and is connected to the base via a rotating joint. The base is provided with a displacement sensor at a horizontal position corresponding to the telescopic section.

[0011] Furthermore, the inclined section includes a first load-bearing bracket and a first linear guide rail located on both sides of the first load-bearing bracket. The telescopic section is provided with a first slider that cooperates with the first linear guide rail. The telescopic section is slidably connected to the inclined section through the first linear guide rail and the first slider.

[0012] Furthermore, the telescopic section includes a second load-bearing bracket and second linear guide rails located on both sides of the second load-bearing bracket. A second slider that cooperates with the second linear guide rail is provided below the lower stretcher bracket. The lower stretcher bracket is slidably connected to the telescopic section through the second linear guide rail and the second slider.

[0013] Furthermore, the self-locking device includes a latch, a cam, a connecting slider mechanism, and a locking tongue. The connecting slider mechanism drives the cam to rotate, and the rotation of the cam drives the locking tongue to extend and retract. The latch is used to lock the locking tongue. The locking tongue in the self-locking device of the lower stretcher support cooperates with the latch in the self-locking device of the upper stretcher support. The lower stretcher support and the upper stretcher support are fixed by two sets of self-locking devices.

[0014] Furthermore, the upper stretcher support is provided with support feet on both sides, and the support feet are located below the two sides of the stretcher body, and the stretcher body is placed on the upper stretcher through the support feet.

[0015] Furthermore, the four lifting devices are located at the four corners of the base plate. Each lifting device includes a lead screw and nut mechanism, a limit block, and a height sensor. The limit block is located above the lead screw and nut mechanism, and the height sensor is located on one side of the limit block. One of the lifting devices is equipped with a servo motor and a reduction gear. The servo motor and the reduction gear drive the lead screw and nut mechanism to move. The lead screw and nut mechanisms of the four lifting devices are connected by a transmission group.

[0016] Furthermore, the upper stretcher support is provided with hooks at its four corners, and the screw nut mechanism is provided with hooks. The positions of the hooks correspond to the positions of the hooks on the upper stretcher support and are connected to the hooks.

[0017] Furthermore, a seat is provided on one side of the carriage, the seat including a seat board and a backrest, and a support linkage mechanism is provided between the seat and the backrest, the seat being laid flat via the support linkage mechanism.

[0018] Furthermore, the telescopic section is provided with a lifting handle at one end near the outside, and the telescopic section and the tilting section, as well as the telescopic section and the lower stretcher support, are locked together by positioning pins.

[0019] The beneficial effects of this utility model are: 1) The tilting section, telescopic section, lower stretcher support and upper stretcher support can tilt and telescopic, which can effectively adapt to high chassis container vehicles. With a vehicle chassis height of 1.4 meters, it can effectively transfer the wounded while ensuring mobility and off-road capability in the battlefield environment.

[0020] 2) The stretcher bed is automatically controlled by hydraulics to tilt and extend horizontally, and the stretcher bed is controlled by a motor to rise, which can quickly transfer the wounded, with high work efficiency and convenient use.

[0021] 3) Two vehicle-mounted stretcher beds can be installed on the vehicle, which can transport 4 lying wounded or 6 sitting wounded in a single rescue, greatly improving the efficiency of wounded transfer and treatment, and improving the survival rate and treatment efficiency of battlefield wounded. Attached Figure Description

[0022] Figure 1 This is a front view of a vehicle-mounted double-layer stretcher bed device according to the present invention; Figure 2 This is a left view of a vehicle-mounted double-layer stretcher bed device according to the present invention; Figure 3 This is an unfolded view of a vehicle-mounted double-layer stretcher bed device according to the present invention; Figure 4 This is a working diagram of the upper stretcher in a vehicle-mounted double-layer stretcher bed device of this utility model; Figure 5 This is an unfolded view of the seat in a vehicle-mounted double-layer stretcher bed device according to the present invention; In the diagram, 1-inclined section, 11-first linear guide rail, 12-first slider, 13-first load-bearing bracket, 2-telescopic section, 21-second linear guide rail, 22-second slider, 23-first positioning pin, 24-second load-bearing bracket, 25-lifting handle, 3-lower stretcher bracket, 4-upper stretcher bracket, 44-support foot, 45-hook, 5-base, 51-hydraulic telescopic cylinder, 52-base bracket, 53-shock absorber, 54-displacement sensor, 6-lifting device, 61-servo motor, 62-reduction device, 63-lifting bracket, 64-limit block, 65-height sensor, 7-seat, 73-seat plate, 74-backrest, 75-support linkage mechanism, 8-self-locking device, 81-second latch, 82-cam, 83-connecting slider mechanism, 84-locking tongue, 9-screw nut mechanism, 94-hook, 10-transmission group, 14-stretcher body. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Example 1: like Figures 1-5As shown, a vehicle-mounted double-layer stretcher bed device includes, from bottom to top, a base 5 and a carriage located above the base 5. The carriage is arranged from bottom to top as follows: an inclined section 1, a telescopic section 2, a lower stretcher support 3, and an upper stretcher support 4. The base 5 is located on the vehicle chassis. One end of the inclined section 1 is connected to the base 5 via a hydraulic telescopic cylinder 51, and the other end of the inclined section 1 is connected to the base 5 via a rotating pair. The inclined section 1, telescopic section 2 and lower stretcher support 3 are connected by a guide rail slider mechanism to form a horizontal telescopic structure. The upper stretcher support 4 is detachably connected to the lower stretcher support 3. The base 5 is provided with lifting devices 6 at its four corners, and the upper stretcher support 4 is raised and lowered by the lifting devices 6. Both the lower stretcher support 3 and the upper stretcher support 4 are equipped with self-locking devices 8 for fixing the stretcher body 14.

[0025] With the above technical solution, the base 5 and the carriage can be placed on the vehicle chassis, and the vehicle chassis can be 1.4 meters high for the purpose of vehicle passability.

[0026] Because of the high chassis, a hydraulic telescopic cylinder 51 is used as the power source to extend the cylinder, lifting one end of the inclined section 1. Since the other end of the inclined section 1 is hinged to the base 5 via a rotating joint, this causes the telescopic section 2, the lower stretcher support 3, and the upper stretcher support 4 above the inclined section 1 to tilt as a whole. Simultaneously, the inclined section 1, telescopic section 2, and lower stretcher support 3 are connected by a guide rail slider mechanism to form a horizontal telescopic structure, and the lower stretcher support 3 is self-lockingly fixed to the upper stretcher. Therefore, the telescopic section 2, lower stretcher support 3, and upper stretcher support 4 can be extended out of the carriage and, through the tilt angle, abut against the ground, completing the tilted connection between the bottom of the carriage and the ground.

[0027] The hydraulic telescopic cylinder 51 is located at one end of the inner side of the carriage, and the tilting section 1, telescopic section 2, lower stretcher support 3, and upper stretcher support 4 can be pulled out from the other side of the carriage. By adjusting the extension length of the hydraulic telescopic cylinder 51, the tilting angle of the tilting section 1 can be adjusted, and the telescopic section 2, upper stretcher support 4, and lower stretcher support 3 can be adjusted to different tilting angles as a whole.

[0028] Specifically, when it is necessary to transfer a patient who is lying down: After the rear cabin door of the carriage is opened, remove the positioning pins of the telescopic section 2 and the tilting section 1, remove the positioning pin between the telescopic section 2 and the lower stretcher support 3, and fix the lower stretcher support 3 to the upper stretcher support 4 through the self-locking device 8. Then, pull the lifting handle 25 of the telescopic section 2 horizontally to stretch the telescopic section 2, the lower stretcher support 3, and the upper stretcher support 4 horizontally out of the carriage. Then turn on the controller and remotely extend the front end of the hydraulic telescopic cylinder 51 to a certain length. The inclined section 1, telescopic section 2, lower stretcher support 3, and upper stretcher support 4 are tilted at a certain angle. At this time, the carriage and the ground form an inclined channel. Place the stretcher body 14 containing the wounded person on the support leg 44 of the upper stretcher support 4, and then rotate the latch of the self-locking device 8 of the upper stretcher support 4 to lock and fix the stretcher body 14 to the upper stretcher support 4 through the locking tongue 84. Then the hydraulic telescopic cylinder 51 retracts completely, and the inclined section 1, telescopic section 2, lower stretcher support 3, upper stretcher support 4 and fixed stretcher body 14 gradually become horizontal. Furthermore, since a displacement sensor 54 is provided on the rear side of the base 5, the distance between the inclined section 1 and the base support 52 can be measured by the displacement sensor 54 to ensure that the inclined section 1, the telescopic section 2, the lower stretcher support 3, and the upper stretcher support 4 are placed completely horizontally.

[0029] Once the inclined section 1, telescopic section 2, lower stretcher support 3, and upper stretcher support 4 are completely horizontal, push the lifting handle 25 horizontally to retract the telescopic section 2, lower stretcher support 3, upper stretcher support 4, stretcher body 14, and the injured person horizontally back into the carriage. Then, the self-locking device 8 of the upper stretcher support 4 and the lower stretcher support 3 is released, the lifting device 6 is started, the hook 94 on the screw nut mechanism 9 is fixed to the pull hook 45 on the upper stretcher support 4, and then the servo motor 61 is started. Through the reduction device 62 and the transmission group 10, the four screw nut mechanisms 9 are driven to work, which makes the hook 94 move vertically and drive the upper stretcher support 4 and the stretcher body 14 to move upward until they are stopped by the limit block 64. After the height sensor 65 detects that the upper stretcher support 4 has been fully raised, the lifting device 6 is stopped.

[0030] Furthermore, the servo motor 61 can be replaced by a hand-cranked motor for manual lifting. The lead screw and nut mechanism is also provided with a lifting bracket 63 and a slide rail slider assembly on one side to ensure that the upper stretcher support 4 can be lifted smoothly.

[0031] After the upper stretcher support 4 has placed the injured person, pull the lifting handle 25 to pull the telescopic section 2 and the lower stretcher support 3 horizontally out of the carriage. Then, by extending a certain length through the hydraulic telescopic cylinder 51, the inclined section 1, the telescopic section 2, and the lower stretcher support 3 are tilted at a certain angle, and the stretcher body 14 containing the wounded is placed on the lower stretcher support 3. Then, the lower stretcher support 3 and the stretcher body 14 are locked and fixed by the locking device. Then, the front end of the hydraulic telescopic cylinder 51 is fully retracted, and the tilting section 1, telescopic section 2, and lower stretcher support 3 gradually become horizontal. After the tilting section 1, telescopic section 2, and lower stretcher support 3 are completely horizontal, the lifting handle 25 is pushed horizontally to make the telescopic section 2, lower stretcher support 3, stretcher body 14, and the injured person horizontally retract back into the carriage.

[0032] The above-described solution enables the vertical placement of multiple wounded individuals, effectively utilizing the vehicle's space and increasing its carrying capacity. Simultaneously, the hydraulic telescopic cylinder 51 and lifting device 6 reduce manpower requirements for handling, improving placement efficiency. It can be seen that two or more wounded individuals can be placed side-by-side at the lower stretcher support 3 or the upper stretcher support 4, further enhancing placement capacity.

[0033] Example 2: like Figure 1 and Figure 5 As shown, seat 7 includes a backrest 74 and a seat 73. Normally, the backrest 74 and seat 73 are vertically pressed against the interior wall of the vehicle. When it is necessary to transfer a seated patient, the seat 73 is pulled, and the seat 73 is placed horizontally via the support linkage mechanism 75 between the seat 73 and the backrest 74, thus forming a seat 7 structure with three positions. After the patient boards the vehicle, they sit in the corresponding three positions and fasten their seatbelts, thus completing the transfer of three seated patients.

[0034] The above technical solution enables the transfer and switching between lying and sitting positions of wounded soldiers according to the actual situation, improving the flexibility of use.

[0035] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A vehicle-mounted double-layer stretcher bed device, characterized in that: From bottom to top, it includes a base (5) and a carriage located above the base (5). Inside the carriage, from bottom to top, there are a tilting section (1), a telescopic section (2), a lower stretcher support (3), and an upper stretcher support (4). The base (5) is located on the vehicle chassis. One end of the inclined section (1) is connected to the base (5) via a hydraulic telescopic cylinder (51), and the other end of the inclined section (1) is connected to the base (5) via a rotating joint. The inclined section (1), telescopic section (2) and lower stretcher support (3) are connected by a guide rail slider mechanism to form a horizontal telescopic structure; The upper stretcher support (4) is detachably connected to the lower stretcher support (3), and lifting devices (6) are provided on the four corners of the base (5). The upper stretcher support (4) is raised and lowered by the lifting devices (6). Both the lower stretcher support (3) and the upper stretcher support (4) are equipped with self-locking devices (8) for fixing the stretcher body (14).

2. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The base (5) includes a base support (52) and a shock absorber (53) located below the base support (52). The hydraulic telescopic cylinder (51) is located at one end of the base (5) and is connected to the base (5) through a rotating joint. The base (5) is provided with a displacement sensor (54) at a horizontal position corresponding to the telescopic section (2).

3. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The inclined section (1) includes a first load-bearing bracket (13) and a first linear guide rail (11) located on both sides of the first load-bearing bracket (13). The telescopic section (2) is provided with a first slider (12) that cooperates with the first linear guide rail (11) below. The telescopic section (2) is slidably connected to the inclined section (1) through the first linear guide rail (11) and the first slider (12).

4. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The telescopic section (2) includes a second load-bearing bracket (24) and a second linear guide rail (21) located on both sides of the second load-bearing bracket (24). The lower stretcher bracket (3) is provided with a second slider (22) that cooperates with the second linear guide rail (21). The lower stretcher bracket (3) is slidably connected to the telescopic section (2) through the second linear guide rail (21) and the second slider (22).

5. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The self-locking device (8) includes a latch, a cam (82), a connecting slider mechanism (83), and a locking tongue (84). The connecting slider mechanism (83) drives the cam (82) to rotate. The rotation of the cam (82) drives the locking tongue (84) to extend and retract. The latch is used to lock the locking tongue (84). The locking tongue (84) in the self-locking device (8) of the lower stretcher support (3) cooperates with the latch in the self-locking device (8) of the upper stretcher support (4). The lower stretcher support (3) and the upper stretcher support (4) are fixed by two sets of self-locking devices (8).

6. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The upper stretcher support (4) is provided with support feet (44) on both sides. The support feet (44) are located on the lower sides of the stretcher body (14). The stretcher body (14) is placed on the upper stretcher through the support feet (44).

7. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The four lifting devices (6) are located at the four corners of the base plate. Each lifting device (6) includes a screw and nut mechanism (9), a limit block (64), and a height sensor (65). The limit block (64) is located above the screw and nut mechanism (9), and the height sensor (65) is located on one side of the limit block (64). One of the lifting devices (6) is equipped with a servo motor (61) and a speed reduction device (62). The servo motor (61) and the speed reduction device (62) drive the screw and nut mechanism (9) to move. The screw and nut mechanisms (9) of the four lifting devices (6) are connected by a transmission group (10).

8. The vehicle-mounted double-layer stretcher bed device according to claim 7, characterized in that: The upper stretcher support (4) is provided with hooks (45) at its four corners, and the screw nut mechanism (9) is provided with hooks (94). The position of the hooks (94) corresponds to the position of the hooks (45) of the upper stretcher support (4) and is connected to the hooks (45).

9. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: A seat (7) is provided on one side of the carriage. The seat (7) includes a seat board (73) and a backrest (74). A support linkage mechanism (75) is provided between the seat (7) and the backrest (74). The seat (7) is laid flat through the support linkage mechanism (75).

10. The vehicle-mounted double-layer stretcher bed device according to claim 1, characterized in that: The telescopic section (2) is provided with a lifting handle (25) at one end near the outside. The telescopic section (2) and the inclined section (1), as well as the telescopic section (2) and the lower stretcher support (3), are locked together by positioning pins.

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